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Finding the Fourth Proportional to 21,468.28, 32,201.84 and 9,618.84

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Solution

The fourth proportional to 21,468.28, 32,201.84 and 9,618.84 is: 14,427.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.28 : 32,201.84 = 9,618.84 : x
  2. Step 2: Convert to fraction form
    21,468.28/32,201.84 = 9,618.84/x
  3. Step 3: Cross multiply
    21,468.28x = 32,201.84 × 9,618.84
  4. Step 4: Simplify right side
    21,468.28x = 309,744,185.66
  5. Step 5: Solve for x
    x = 309,744,185.66/21,468.28
  6. Step 6: Final answer
    x = 14,427.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.